Have you tried Aptana Studio? Personally, I don't like Aptana it's like Eclipse pretty much. I haven't tried all the features of Aptana, it didn't hook me.
Dreamweaver and Visual Studio Web are the ones that I prefer. Both have support of jQuery and strong autocompletion and pretty nice syntax coloring.
If I had to choose between them, I would take Dreamweaver.
Of course, Dreamweaver is not free but Visual Studio Web Express is free.
I just saw a bunch of running and jumping past all the enemies look like it was scripted as he said I guess I should have watched the whole thing. I only got a couple of minutes in. You should post that video in the forum Tom
Currently busy with making the run even better, so I'll post that new one once I'm done. Right now, I had to modify the emulator itself, the tools that makes this video, and some RAM address disassembling / reverse-engineering to get the right values, and such.